What is code signing in iOS operating system?

858

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What are layer objects and what do they represent in iOS operating system?

852

---

What is fast enumeration in iOS operating system?

929

---

What is the difference between delegates and notifications in iOS operating system?

888

---

What is dynamic typing in iOS operating system?

893

---

Implement the following methods: retain, release, auto release in iOS operating system?

857

---

What is dynamic in iOS operating system?

1066

---

What is atomic and nonatomic in iOS operating system? What is run loop in iOS ?

891

---

What is a struct in iOS operating system?

828

---

Explain the difference between NSOperationQueue concurrent and non-concurrent in iOS operating system?

896

---

Which class will be subclassed in iOS operating system?

860

---

What is view object in iOS operating system?

993

---

Explain the options and bars available in xcode 4.x workspace window in iOS operating system

869

---

What is the difference between retain & assign in iOS operating system?

1058

---

What is the difference between NSArray and NSMutableArray in iOS operating system?

854

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